Split the second term in 4m^2 + 16m + 15 into two terms
4m^2 + 10m + 6m + 15
Factor out the common terms in the first two terms, then in the last two terms
2m(2m + 5) + 3(2m + 5)
Factor out the common term 2m + 5
(2m + 5)(2m + 3)
f(x) = -37
Domain is all real numbers
Range is only {-37}
=40mn-12m+40mn-9mn+6n-24m+72mn-5mn-36mn
=102mn-36m+6n
B.LECA
C.90^0
D.29^0
Acute is less than 90 but greater than 0.
Right angles at exactly 90 degrees
